Crest Professional Effects Luxe Whitestrips utilize advanced whitening technology that can remove up to 14 years of tough stains from the comfort of home. This professional level whitening system is formulated with the same enamel safe ingredients your dentist uses, but produces visibly whiter teeth in just a few days, with full results in 20 days! With the advanced seal™ no-slip technology, the strips stay in place while you talk or move. If you're looking for the luxury whiteness you get from a dentist but do not want to pay the cost of an in-office treatment, Brow Art, Alpha, Crest Professional Effects Luxe Whitestrips are safe, effective and trusted worldwide. Reveal your brightest, most confident smile with this premium at-home whitening solution!